Re: About Entity Relation Diagram
From: Alfredo Novoa <alfredo_novoa_at_hotmail.com>
Date: Fri, 17 Dec 2004 10:54:42 GMT
Message-ID: <41c2baed.362031_at_news.wanadoo.es>
Date: Fri, 17 Dec 2004 10:54:42 GMT
Message-ID: <41c2baed.362031_at_news.wanadoo.es>
On Fri, 17 Dec 2004 10:15:18 GMT, Bernard Peek <bap_at_shrdlu.com> wrote:
>In message <41c19be3.13488406_at_news.wanadoo.es>, Alfredo Novoa
><alfredo_novoa_at_hotmail.com> writes
>
>
>>The table design is the logical design. The ER design is a conceptual
>>design.
>
>Not all methodologies distinguish between conceptual and logical
>designs.
True, but not all methodologies are sound.
This is a fundamental distinction.
Regards Received on Fri Dec 17 2004 - 11:54:42 CET